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Finding the Fourth Proportional to 715.02, 986.76 and 559.50

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Solution

The fourth proportional to 715.02, 986.76 and 559.50 is: 772.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    715.02 : 986.76 = 559.50 : x
  2. Step 2: Convert to fraction form
    715.02/986.76 = 559.50/x
  3. Step 3: Cross multiply
    715.02x = 986.76 × 559.50
  4. Step 4: Simplify right side
    715.02x = 552,092.22
  5. Step 5: Solve for x
    x = 552,092.22/715.02
  6. Step 6: Final answer
    x = 772.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.